This forum is for discussion pertaining to homebrew and indie software for the Dreamcast, such as homebrew games, emulators/interpreters, and other homebrew software/applications. Porting requests and developmental ideas are not to be made here; you can make those here. If you need any help burning discs for homebrew software, this is the place to ask as well.

I have a particular question... In regards to emulation on the Dreamcast, does there exist a Sega CD emulator? I mean, surely the Dreamcast can support discs from previous Sega Systems, can it? Is there anyone able to answer my question?

The Genesis + Sega CD combo is a powerful beast, so it won't be easy, although not impossible: We got Fox68k's FAME + FAZE and BlackAura's PVR renderer. Plus many games don't actually use the SCD's hardware at all, so there probably are some 'tricks' that could be used, like underclocking the Mega Drive's Z80 + Sega CD's M68000, etc. pp.

- I think that BlackAura and Fox68k both agree in that it is possible to emulate the SCD on Dreamcast, and I think that once Genesis emulation has been improved, they might start looking into it.

Yeah, it can read the discs with no problem. The problem is just one of emulating the hardware - there's an extra 68k running at 12MHz (the one in the Mega Drive runs at 8MHz), more RAM, another sound chip, and graphics coprocessor, in addition to the CD drive itself, and all the hardware that connects the two systems together.